公开(公告)号：US11889436B2

公开(公告)日：2024-01-30

申请号：US16995658

申请日：2020-08-17

Applicant: QUALCOMM Incorporated

Inventor： Jay King ,  Alexander Dorosenco ,  Muhammad Sayed Khairy Abdelghaffar ,  Joseph Binamira Soriaga ,  Carl Hardin ,  Alexandros Manolakos ,  James Krysl ,  Michael Allen Kongelf ,  Krishna Kiran Mukkavilli ,  Tingfang Ji ,  Joseph Patrick Burke

IPC: H04W56/00

CPC classification number: H04W56/0005 ,  H04W56/004 ,  H04W56/009

Abstract: The transmission and reception group delay in a front end structure of a mobile device may be determined using closed loop calibration. The closed loop may be a near field radiated closed loop between pairs of antennas in an antenna array of the mobile device. The delay based on time of transmission and time of reception may be measured for a plurality of pairs of antennas, from which the transmit and receive group delay within a single path may be determined. The propagation delay of the signal between antennas may be included in the group delay calibration for increased accuracy. In another implementation, a conducted closed loop, e.g., in the transceiver or in a radio frequency switching network may be used to calibrate the group delay. Pre-characterization of the delay caused by components between the closed loop and antennas may be included in the group delay calibration for increased accuracy.

公开(公告)号：US12028748B2

公开(公告)日：2024-07-02

申请号：US17481244

申请日：2021-09-21

Applicant: QUALCOMM Incorporated

Inventor： Christian Oliver Thelen ,  Senthilkumar Sundaram ,  Rohan Salvi ,  James Krysl ,  Kenneth David Easton

IPC: H04W28/06 ,  H04L27/26 ,  H04B7/06

CPC classification number: H04W28/06 ,  H04L27/2655 ,  H04B7/0617

Abstract: Aspects relate to provision of a control message, such as an extension data section, that includes an indication of the repeat of highest priority data sections. The control message may be generated in a distributed unit (DU) and conveyed to a radio unit (RU) via a fronthaul link. The control message may include either a flag or bits in a field of an extension data section allowing a RU to determine repeat of the highest priority data section based on reception of the flag or processing of the bit value in the field. Additionally, the indication of repetition of the highest priority section may be based on a section identifier transmitted by a DU, wherein an RU receiving the section identifier may determine repeat of the highest priority data section by tracking the received section identifier.